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choneofakind · April 8th, 2014, 08:22 AM

How much cheaper of a commuter are you going for that 63 mpg isn't good enough?

FWIW, 63 mpg sounds totally normal for average riding. I see nothing immediately wrong mechanically with your bike. I'm able to get ~63 as well on my pregen with mixed riding, no particular emphasis on mileage. I'm a calm/casual rider and I have my fun without always being wide open. But the bike is my toy so I really don't care about the gas mileage. It's just an added perk to riding vs. driving my car, which gets about 27-30 mpg, again, no particular emphasis on mileage.

EDIT: the other thing to remember is the 08+ is intended to make more power in the mid-range. It has cams with less duration and has relaxed ignition timing at about 36 degrees BTDC. Compare that to the pregen, which is tuned for high end power. The pregen cams have more overlap and the ignition timing is advanced at about 42 degrees BTDC. This means that your engine on the '02 will be in its most efficient range at a slightly higher rpm than the 08+ bike. (correct me if I'm wrong)

April 8th, 2014, 08:22 AM	#18
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	How much cheaper of a commuter are you going for that 63 mpg isn't good enough? FWIW, 63 mpg sounds totally normal for average riding. I see nothing immediately wrong mechanically with your bike. I'm able to get ~63 as well on my pregen with mixed riding, no particular emphasis on mileage. I'm a calm/casual rider and I have my fun without always being wide open. But the bike is my toy so I really don't care about the gas mileage. It's just an added perk to riding vs. driving my car, which gets about 27-30 mpg, again, no particular emphasis on mileage. EDIT: the other thing to remember is the 08+ is intended to make more power in the mid-range. It has cams with less duration and has relaxed ignition timing at about 36 degrees BTDC. Compare that to the pregen, which is tuned for high end power. The pregen cams have more overlap and the ignition timing is advanced at about 42 degrees BTDC. This means that your engine on the '02 will be in its most efficient range at a slightly higher rpm than the 08+ bike. (correct me if I'm wrong)